#include <stdio.h>
#include <stdlib.h>


int strlen_my(char *string);

int main()
{
    int size = strlen_my("hello"); 
    printf("size = %d",size);
    return 0;
}

int strlen_my(char *string)
{
    int length = 0;
    
    while( *string++ != '\0' )
    {
        length++;
    }
    return length;
}
